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(11) | EP 0 915 037 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Agricultural machinery incorporating improved elevator system |
(57) The present invention provides mobile agricultural machinery for use in the harvesting
of root crops. The machinery (10) comprises a chassis (12) provided with wheels (14),
root crop harvesting shares (18), and an elevator system (22) including at least one
generally vertically extending portion for conveying tubers (40)or the like generally
vertically upwards from a first level to a second level. The elevator system comprises
first and second endless belts (24, 25) and drive means (30) therefor which drive
said belts in counter-rotating directions so that opposed conveying surfaces of the
belts are driven in a common direction so as to define a conveying passage (28) therebetween.
The conveying surfaces of the endless conveyor belts 24, 25 are provided with a multiplicity
of evenly spaced, resiliently deformable projections (35) for engaging and supporting
the tubers in the conveying passage (28). |